如何添加阴影和圆形的ImageView的Android边界? [英] How to add a shadow and a border on circular imageView android?
问题描述
我创建了一个CircularImageView这个问题:创建Android中圆形图像视图
下载项目 GitHub上
1)这是CircularImageView类:
公共类CircularImageView扩展ImageView的{
公共CircularImageView(上下文的背景下){
超(上下文);
}
公共CircularImageView(上下文的背景下,ATTRS的AttributeSet){
超(背景下,ATTRS);
}
公共CircularImageView(上下文的背景下,ATTRS的AttributeSet,诠释defStyle){
超(背景下,ATTRS,defStyle);
}
@覆盖
保护无效的OnDraw(帆布油画){
可绘制绘制= getDrawable();
如果(绘制== NULL){
返回;
}
如果(的getWidth()== 0 ||的getHeight()== 0){
返回;
}
位图B =((BitmapDrawable)可拉伸).getBitmap();
点阵位图= b.copy(Bitmap.Config.ARGB_8888,真正的);
位图roundBitmap = getCroppedBitmap(位图,的getWidth());
canvas.drawBitmap(roundBitmap,0,0,NULL);
}
公共静态位图getCroppedBitmap(BMP位图,诠释半径){
位图sbmp;
如果(bmp.getWidth()!=半径|| bmp.getHeight()!=半径)
sbmp = Bitmap.createScaledBitmap(BMP,半径,半径,假);
其他
sbmp = BMP;
位图输出= Bitmap.createBitmap(sbmp.getWidth(),sbmp.getHeight(),Bitmap.Config.ARGB_8888);
最终矩形矩形=新的Rect(0,0,sbmp.getWidth(),sbmp.getHeight());
涂料粉刷=新的油漆();
paint.setAntiAlias(真正的);
paint.setFilterBitmap(真正的);
paint.setDither(真正的);
paint.setColor(Color.parseColor(#BAB399));
帆布C =新的Canvas(输出);
c.drawARGB(0,0,0,0);
c.drawCircle(sbmp.getWidth()/ 2 + 0.7f,sbmp.getHeight()/ 2 + 0.7f,sbmp.getWidth()/ 2 + 0.1F,油漆);
paint.setXfermode(新PorterDuffXfermode(Mode.SRC_IN));
c.drawBitmap(sbmp,矩形,矩形,油漆);
返回输出;
}
}
2)我在我的布局中使用这样的:
< LinearLayout中的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:layout_width =match_parent
机器人:layout_height =match_parent
机器人:后台=#CCCCCC
机器人:重力=中心
机器人:方向=垂直
机器人:填充=10dp>
< com.mikhaellopez.circularimageview.CircularImageView
机器人:ID =@ + ID / imageViewCircular
机器人:layout_width =@扪/ image_view_size
机器人:layout_height =@扪/ image_view_size
机器人:layout_gravity =中心
机器人:背景=@可绘制/边框
机器人:SRC =@可绘制/图像/>
< / LinearLayout中>
3)当前导致画面:
我要如何改变这种code有一个阴影,在我的ImageView圆形边框?
的Objectif结果:
修改二零一五年十月一十五日:
您可以使用或下载我的 GitHub的库 CircularImageView < /一>是所有修补程序使用摇篮依赖
编译com.mikhaellopez:circularimageview:2.0.1
我修改了 CircularImageView这里找到来实现你想要的
要创建一个围绕边框阴影,我只是用这两条线:
this.setLayerType(LAYER_TYPE_SOFTWARE,的paintBorder);
paintBorder.setShadowLayer(4.0F,0.0,2.0f,Color.BLACK);
您需要 setLayerType
由于对蜂窝了硬件加速。它并没有它工作时,我尝试了。
下面是完整的code:
进口android.annotation.Sup pressLint;
进口android.content.Context;
进口android.graphics.Bitmap;
进口android.graphics.BitmapShader;
进口android.graphics.Canvas;
进口android.graphics.Color;
进口android.graphics.Paint;
进口android.graphics.Shader;
进口android.graphics.drawable.BitmapDrawable;
进口android.util.AttributeSet;
进口android.widget.ImageView;
公共类CircularImageView扩展的ImageView
{
私人诠释边框宽度= 4;
私人诠释viewWidth;
私人诠释viewHeight;
私人位图图像;
民营涂料粉刷;
民营涂料的paintBorder;
私人BitmapShader着色器;
公共CircularImageView(上下文的背景下)
{
超(上下文);
建立();
}
公共CircularImageView(上下文的背景下,ATTRS的AttributeSet)
{
超(背景下,ATTRS);
建立();
}
公共CircularImageView(上下文的背景下,ATTRS的AttributeSet,INT defStyle)
{
超(背景下,ATTRS,defStyle);
建立();
}
私人无效设置()
{
//初始化漆
油漆=新的油漆();
paint.setAntiAlias(真正的);
的paintBorder =新的油漆();
setBorderColor(Color.WHITE);
paintBorder.setAntiAlias(真正的);
this.setLayerType(LAYER_TYPE_SOFTWARE,的paintBorder);
paintBorder.setShadowLayer(4.0F,0.0,2.0f,Color.BLACK);
}
公共无效setBorderWidth(INT边框宽度)
{
this.borderWidth =边框宽度;
this.invalidate();
}
公共无效setBorderColor(INT BORDERCOLOR)
{
如果(的paintBorder!= NULL)
paintBorder.setColor(BORDERCOLOR);
this.invalidate();
}
私人无效loadBitmap()
{
BitmapDrawable bitmapDrawable =(BitmapDrawable)this.getDrawable();
如果(bitmapDrawable!= NULL)
图像= bitmapDrawable.getBitmap();
}
@燮pressLint(DrawAllocation)
@覆盖
公共无效的OnDraw(帆布油画)
{
//将位图
loadBitmap();
//初始化着色器
如果(图像!= NULL)
{
着色器=新BitmapShader(Bitmap.createScaledBitmap(图像,canvas.getWidth(),canvas.getHeight(),FALSE),Shader.TileMode.CLAMP,Shader.TileMode.CLAMP);
paint.setShader(着色);
INT circleCenter = viewWidth / 2;
// circleCenter认为中心的x或y
//半径要绘制在cirle的像素的半径
//涂料包含将纹理化形状着色器
canvas.drawCircle(circleCenter +边框宽度,circleCenter +边框宽度,circleCenter +边框宽度 - 4.0F,的paintBorder);
canvas.drawCircle(circleCenter +边框宽度,circleCenter +边框宽度,circleCenter - 4.0F,油漆);
}
}
@覆盖
保护无效onMeasure(INT widthMeasureSpec,INT heightMeasureSpec)
{
INT宽度= measureWidth(widthMeasureSpec);
INT高= measureHeight(heightMeasureSpec,widthMeasureSpec);
viewWidth =宽度 - (边框宽度* 2);
viewHeight =身高 - (边框宽度* 2);
setMeasuredDimension(宽度,高度);
}
私人诠释measureWidth(INT measureSpec)
{
INT结果为0;
INT specMode = MeasureSpec.getMode(measureSpec);
INT specSize = MeasureSpec.getSize(measureSpec);
如果(specMode == MeasureSpec.EXACTLY)
{
//我们被告知有多大是
结果= specSize;
}
其他
{
//测量的文本
结果= viewWidth;
}
返回结果;
}
私人诠释measureHeight(INT measureSpecHeight,INT measureSpecWidth)
{
INT结果为0;
INT specMode = MeasureSpec.getMode(measureSpecHeight);
INT specSize = MeasureSpec.getSize(measureSpecHeight);
如果(specMode == MeasureSpec.EXACTLY)
{
//我们被告知有多大是
结果= specSize;
}
其他
{
//测量文本(注意:上升为负数)
结果= viewHeight;
}
返程(结果+ 2);
}
}
我希望它能帮助!
修改
我叉你CircularImageView,并增加了选择覆盖的支持。我也改善显著的绘图性能...
<一个href="https://github.com/Pkmmte/CircularImageView">https://github.com/Pkmmte/CircularImageView
I created a CircularImageView with this question: Create circular image view in android
Download project on GitHub
1) This is the CircularImageView class :
public class CircularImageView extends ImageView {
public CircularImageView(Context context) {
super(context);
}
public CircularImageView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public CircularImageView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
@Override
protected void onDraw(Canvas canvas) {
Drawable drawable = getDrawable();
if (drawable == null) {
return;
}
if (getWidth() == 0 || getHeight() == 0) {
return;
}
Bitmap b = ((BitmapDrawable)drawable).getBitmap() ;
Bitmap bitmap = b.copy(Bitmap.Config.ARGB_8888, true);
Bitmap roundBitmap = getCroppedBitmap(bitmap, getWidth());
canvas.drawBitmap(roundBitmap, 0, 0, null);
}
public static Bitmap getCroppedBitmap(Bitmap bmp, int radius) {
Bitmap sbmp;
if(bmp.getWidth() != radius || bmp.getHeight() != radius)
sbmp = Bitmap.createScaledBitmap(bmp, radius, radius, false);
else
sbmp = bmp;
Bitmap output = Bitmap.createBitmap(sbmp.getWidth(), sbmp.getHeight(), Bitmap.Config.ARGB_8888);
final Rect rect = new Rect(0, 0, sbmp.getWidth(), sbmp.getHeight());
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setFilterBitmap(true);
paint.setDither(true);
paint.setColor(Color.parseColor("#BAB399"));
Canvas c = new Canvas(output);
c.drawARGB(0, 0, 0, 0);
c.drawCircle(sbmp.getWidth() / 2+0.7f, sbmp.getHeight() / 2+0.7f, sbmp.getWidth() / 2+0.1f, paint);
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
c.drawBitmap(sbmp, rect, rect, paint);
return output;
}
}
2) I use in my layout like this :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#cccccc"
android:gravity="center"
android:orientation="vertical"
android:padding="10dp" >
<com.mikhaellopez.circularimageview.CircularImageView
android:id="@+id/imageViewCircular"
android:layout_width="@dimen/image_view_size"
android:layout_height="@dimen/image_view_size"
android:layout_gravity="center"
android:background="@drawable/border"
android:src="@drawable/image" />
</LinearLayout>
3) Current result in picture :
How do I change this code to have a shadow and a circular border around my imageView?
Objectif result :
Edit 10/15/2015 :
You can used or download my GitHub library CircularImageView with all the fixes by using gradle dependency :
compile 'com.mikhaellopez:circularimageview:2.0.1'
I modified the CircularImageView found here to achieve what you want.
To create a shadow around the border, I simply used these two lines:
this.setLayerType(LAYER_TYPE_SOFTWARE, paintBorder);
paintBorder.setShadowLayer(4.0f, 0.0f, 2.0f, Color.BLACK);
You need setLayerType
due to hardware acceleration on HoneyComb and up. It didn't work without it when I tried it.
Here is the full code:
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.util.AttributeSet;
import android.widget.ImageView;
public class CircularImageView extends ImageView
{
private int borderWidth = 4;
private int viewWidth;
private int viewHeight;
private Bitmap image;
private Paint paint;
private Paint paintBorder;
private BitmapShader shader;
public CircularImageView(Context context)
{
super(context);
setup();
}
public CircularImageView(Context context, AttributeSet attrs)
{
super(context, attrs);
setup();
}
public CircularImageView(Context context, AttributeSet attrs, int defStyle)
{
super(context, attrs, defStyle);
setup();
}
private void setup()
{
// init paint
paint = new Paint();
paint.setAntiAlias(true);
paintBorder = new Paint();
setBorderColor(Color.WHITE);
paintBorder.setAntiAlias(true);
this.setLayerType(LAYER_TYPE_SOFTWARE, paintBorder);
paintBorder.setShadowLayer(4.0f, 0.0f, 2.0f, Color.BLACK);
}
public void setBorderWidth(int borderWidth)
{
this.borderWidth = borderWidth;
this.invalidate();
}
public void setBorderColor(int borderColor)
{
if (paintBorder != null)
paintBorder.setColor(borderColor);
this.invalidate();
}
private void loadBitmap()
{
BitmapDrawable bitmapDrawable = (BitmapDrawable) this.getDrawable();
if (bitmapDrawable != null)
image = bitmapDrawable.getBitmap();
}
@SuppressLint("DrawAllocation")
@Override
public void onDraw(Canvas canvas)
{
// load the bitmap
loadBitmap();
// init shader
if (image != null)
{
shader = new BitmapShader(Bitmap.createScaledBitmap(image, canvas.getWidth(), canvas.getHeight(), false), Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
paint.setShader(shader);
int circleCenter = viewWidth / 2;
// circleCenter is the x or y of the view's center
// radius is the radius in pixels of the cirle to be drawn
// paint contains the shader that will texture the shape
canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter + borderWidth - 4.0f, paintBorder);
canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter - 4.0f, paint);
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
int width = measureWidth(widthMeasureSpec);
int height = measureHeight(heightMeasureSpec, widthMeasureSpec);
viewWidth = width - (borderWidth * 2);
viewHeight = height - (borderWidth * 2);
setMeasuredDimension(width, height);
}
private int measureWidth(int measureSpec)
{
int result = 0;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
if (specMode == MeasureSpec.EXACTLY)
{
// We were told how big to be
result = specSize;
}
else
{
// Measure the text
result = viewWidth;
}
return result;
}
private int measureHeight(int measureSpecHeight, int measureSpecWidth)
{
int result = 0;
int specMode = MeasureSpec.getMode(measureSpecHeight);
int specSize = MeasureSpec.getSize(measureSpecHeight);
if (specMode == MeasureSpec.EXACTLY)
{
// We were told how big to be
result = specSize;
}
else
{
// Measure the text (beware: ascent is a negative number)
result = viewHeight;
}
return (result + 2);
}
}
I hope it helps!
.
EDIT
I forked your CircularImageView and added support for selector overlays. I also improved drawing performance significantly...
https://github.com/Pkmmte/CircularImageView
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